Wall Face
Wall Faces[1], also referred to as Wall Masks[2], are obstacles in Mario & Luigi: Superstar Saga. They are encountered at Chucklehuck Woods, Woohoo Hooniversity, and Joke's End, with each location changing the Wall Face's appearance. When a nearby Pressure Plate is stepped on, the Wall Face opens its eyes and mouth to shoot either a fireball (at Chucklehuck Woods and Joke's End) or a lightning bolt (at Woohoo Hooniversity). If Mario and Luigi are standing on it, they are hit by the blast and sent flying back. If Luigi steps on the Pressure Plate while inside of a Barrel, through the use of his Luigi Dunk, the blast bounces off. If the Wall Face launches a fireball, it is sent back towards the Wall Face, destroying it and usually opening a door in the process. If it launches a lightning bolt, it bounces off perpendicular to the Wall Face.
